AU779245B2 - Continuous extrusion apparatus - Google Patents
Continuous extrusion apparatus Download PDFInfo
- Publication number
- AU779245B2 AU779245B2 AU79331/00A AU7933100A AU779245B2 AU 779245 B2 AU779245 B2 AU 779245B2 AU 79331/00 A AU79331/00 A AU 79331/00A AU 7933100 A AU7933100 A AU 7933100A AU 779245 B2 AU779245 B2 AU 779245B2
- Authority
- AU
- Australia
- Prior art keywords
- sectional area
- extrusion apparatus
- cross
- continuous extrusion
- continuous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/005—Continuous extrusion starting from solid state material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Formation And Processing Of Food Products (AREA)
Abstract
Continuous extrusion apparatus for the production of copper tubing having a rotatable wheel formed with a plurality of circumferential grooves registering with (as shown in FIG. 1) abutments 4 formed on a die top 2. Respective exit apertures 6 each have a cross-sectional area of between two and five times the radial cross-section of the associated groove and lead to a passage 8 smoothly diverging to connect into an extrusion die chamber 10 housing an annular extrusion die (not shown). The appartus produces an extrudate in the form of a continuous, seamless, copper tube having a mass in excess of 500 kilograms extruded at a temperature of approximately 750 degrees Celsius.
Description
07/10 '04 THU 18:51 FAX 61299255911 GRIFFITH HACK 1005 1A CONTINUOUS EXTRUSION APPARATUS Field of the Invention This invention relates to continuous extrusion apparatus for the forming of metals.
Background Art W096/29162 (which corresponds to US5813270) discloses continuous extrusion apparatus for the production of copper tubing have a rotatable wheel formed with a plurality of circumferential grooves provided with exit apertures in a die top and abutments displaced in the direction of rotation from the exit apertures.
Summary of the Invention In a first aspect the present invention provides continuous extrusion apparatus for the production of copper tubing having a rotatable wheel formed with a plurality of circumferential grooves provided with exit apertures in a die top and abutments displaced in the direction of rotation from the exit apertures, characterised in that each of the plurality of circumferential grooves is provided with an exit aperture in the die top Shaving a cross-sectional area in excess of twice the radial cross-sectional area of the o associated groove and smoothly leading to a passage of minimum length to connect into an annular extrusion die.
In use, feedstock can be introduced into the plurality of circumferential grooves by the rotating wheel to pass into passageways formed between the grooves and arcuate tooling extending into the grooves.
Preferably, the exit aperture has a cross-sectional area of three times the radial cross-sectional area of the associated groove.
Suitably, the exit aperture has a cross-sectional area of four times the radial 25 cross-sectional area of the associated groove.
Desirably, the exit aperture has a cross-sectional area of five times the radial cross-sectional area of the associated groove.
According to a second aspect of the present invention there is provided an extrudate product that is produced by the apparatus of the first aspect, the product in the form of a continuous, seamless, copper tube having a mass in excess of 500 kilograms.
According to a third aspect of the present invention there is provided an extrudate product that is produced by the apparatus of the first aspect, characterised in that the extrudate product is extruded at a temperature of approximately 750 degrees Celsius.
It will be understood that the term seamless relates to a copper tube formed as a tube by an extrusion process as distinct from a copper tube formed by edge joining a strip or strips along abutting edges.
COMS ID No: SBMI-00945750 Received by IP Australia: Time 18:57 Date 2004-10-07 2 In one embodiment of the invention, in which Figure 1 shows a cross-section of a die top 2 corresponding to the plan view of Figure 2, a rotatable wheel (not shown) is formed with a pair of circumferential grooves registering with abutments 4 formed on the die top 2. Adjacent each abutment 4, the die top 2 is provided with an exit aperture 6 having a cross-sectional area of approximately five times the radial cross-section of the associated groove. Each aperture leads to a passage 8 smoothly diverging to connect into an extrusion die chamber 10 housing an annular extrusion die (not shown).
In operation, feedstock in the form of continuous rods of copper is fed to each of the grooves and, as the wheel rotates, extrudes through the exit apertures 6 adjacent the abutments 4 and the passages 8 and is extruded from the annular extrusion die in the 0die chamber 10 as seamless copper tubing. Since the passages 8 are of minimum length, the two flows of extrudate through the passage combine at the annular die at a S 15 pressure only slightly lower than the pressure obtaining in the material in the grooves "0 immediately adjacent the exit apertures 6, with a resultant extrusion temperature at the annular die of approximately 750 0 C as compared with a temperature of approximately 650 0 C achieved in prior art arrangements.
20 The relatively high temperature and pressure at the annular die enables the 0000° extrusion of sound, thin-walled, copper tubing without imperfections likely to arise from combining flows of extrudate at lower temperatures and pressures.
0..
•O0t= It will be appreciated that there is no limitations on the length of seamless o 25 copper tubing that may be produced in this manner, so that reels of 500 kilograms or more of continuous seamless copper tubing may be produced. Hitherto, utilising conventional extrusion techniques, it has not been possible to produce seamless, copper tubing in a continuous length of such a mass, even though there is a commercial demand for reels of continuous seamless copper tubing of a mass of 500 kilograms or more.
It is to be understood that, if any prior art information is referred to herein, such reference does not constitute an admission that the information forms a part of the common general knowledge in the art, in Australia or any other country.
Claims (7)
1. Continuous extrusion apparatus for the production of copper tubing having a rotatable wheel formed with a plurality of circumferential grooves provided with exit apertures in a die top and abutments displaced in the direction of rotation from the exit apertures, characterised in that each of the plurality of circumferential grooves is provided with an exit aperture in the die top having a cross-sectional area in excess of twice the radial cross-sectional area of the associated groove and smoothly leading to a passage of minimum length to connect into an annular extrusion die.
2. Continuous extrusion apparatus as claimed in Claim 1, characterised in that the exit aperture has a cross-sectional area of three times the radial cross-sectional area of the associated groove. S: 15
3. Continuous extrusion apparatus as claimed in Claim 1, characterised in that the exit aperture has a cross-sectional area of four times the radial cross-sectional area of the associated groove.
4. Continuous extrusion apparatus as claimed in Claim 1, characterised in that 20 the exit aperture has a cross-sectional area of five times the radial cross-sectional area of the associated groove.
5. Continuous extrusion apparatus substantially as hereinbefore described with reference to the accompanying drawings. o-
6. An extrudate product of continuous extrusion apparatus as claimed in any one of Claims 1 to 5, in the form of a continuous, seamless, copper tube having a mass in excess of 500 kilograms.
7. An extrudate product of continuous extrusion apparatus as claimed in any one of Claims 1 to 6, characterised in that the extrudate product is extruded at a temperature of approximately 750 degrees Celsius. Dated this 7th day of October 2004 BWE LIMITED By its Patent Attorneys GRIFFITH HACK COMS ID No: SBMI-00945750 Received by IP Australia: Time 18:57 Date 2004-10-07
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9924160.6A GB9924160D0 (en) | 1999-10-12 | 1999-10-12 | Continuous extrusion apparatus |
| GB9924160 | 1999-10-12 | ||
| PCT/GB2000/003959 WO2001026834A1 (en) | 1999-10-12 | 2000-10-12 | Continuous extrusion apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU7933100A AU7933100A (en) | 2001-04-23 |
| AU779245B2 true AU779245B2 (en) | 2005-01-13 |
Family
ID=10862617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU79331/00A Ceased AU779245B2 (en) | 1999-10-12 | 2000-10-12 | Continuous extrusion apparatus |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US6619093B2 (en) |
| EP (1) | EP1220723B1 (en) |
| JP (1) | JP2003511243A (en) |
| CN (1) | CN1377306A (en) |
| AT (1) | ATE381395T1 (en) |
| AU (1) | AU779245B2 (en) |
| CA (1) | CA2397807A1 (en) |
| DE (1) | DE60037529T2 (en) |
| GB (1) | GB9924160D0 (en) |
| RU (1) | RU2247618C2 (en) |
| WO (1) | WO2001026834A1 (en) |
| ZA (1) | ZA200201684B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9924161D0 (en) * | 1999-10-12 | 1999-12-15 | Bwe Ltd | Copper tubing |
| GB0304114D0 (en) * | 2003-02-22 | 2003-03-26 | Bwe Ltd | Continuous extrusion apparatus |
| GB0423222D0 (en) * | 2004-10-20 | 2004-11-24 | Bwe Ltd | Continuous extrusion apparatus |
| CN100431729C (en) * | 2006-09-29 | 2008-11-12 | 大连康丰科技有限公司 | Continuously squeezing method and apparatus for expanding extrusion |
| GB0722515D0 (en) * | 2007-11-15 | 2007-12-27 | Bwe Ltd | Continuous extrusion apparatus |
| DE102012009337A1 (en) * | 2012-05-10 | 2013-11-14 | Volkswagen Aktiengesellschaft | Low-voltage electrical conductor for connecting current-carrying components of e.g. secondary batteries mounted in hybrid vehicle, has copper tube that is attached to contact regions of flattened portions |
| EP2972264A4 (en) | 2013-03-14 | 2016-12-07 | Sano Intelligence Inc | On-body microsensor for biomonitoring |
| US10820860B2 (en) | 2013-03-14 | 2020-11-03 | One Drop Biosensor Technologies, Llc | On-body microsensor for biomonitoring |
| WO2015138989A1 (en) | 2014-03-13 | 2015-09-17 | Sano Intelligence, Inc. | System for monitoring body chemistry |
| US10595754B2 (en) | 2014-03-13 | 2020-03-24 | Sano Intelligence, Inc. | System for monitoring body chemistry |
| CN107138549A (en) * | 2017-06-28 | 2017-09-08 | 太仓斯普宁精密机械有限公司 | A kind of extrusion die with rotating discharge bottom plate |
| CN112264473A (en) * | 2020-08-24 | 2021-01-26 | 中国工程物理研究院材料研究所 | Device and method for preparing high-chemical-activity metal fine-grain and ultra-fine-grain materials |
| USD988882S1 (en) | 2021-04-21 | 2023-06-13 | Informed Data Systems Inc. | Sensor assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0398747A1 (en) * | 1989-05-18 | 1990-11-22 | Bwe Limited | Continuous extrusion apparatus |
| US5813270A (en) * | 1995-03-17 | 1998-09-29 | Bwe Limited | Continuous extrusion apparatus |
| GB2326121A (en) * | 1997-06-11 | 1998-12-16 | T & N Technology Ltd | Improved continuous rotary extrusion machine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2078584B (en) | 1980-06-10 | 1983-08-10 | Atomic Energy Authority Uk | Apparatus for continuous extrusion |
| JPS57159213A (en) * | 1981-03-26 | 1982-10-01 | Sumitomo Electric Ind Ltd | Manufacture of composite wire rod |
| GB2103527A (en) * | 1981-08-12 | 1983-02-23 | Atomic Energy Authority Uk | Continuous extrusion |
| JPS59223113A (en) * | 1983-06-03 | 1984-12-14 | Sumitomo Heavy Ind Ltd | Rotary wheel type metal continuous extruding machine |
| NL8302003A (en) | 1983-06-06 | 1985-01-02 | Henricus Peter Marie Backus | METHOD AND APPARATUS FOR CONTINUOUS PLASTIC DEFORMATION OF DUCTIAL NONFERRO METALS |
| GB8720670D0 (en) | 1987-09-03 | 1987-10-07 | Bicc Plc | Continuous extrusion of tubes |
| US5284428A (en) * | 1991-12-27 | 1994-02-08 | Southwire Company | Apparatus for conform extrusion of powder feed |
| JP2871945B2 (en) * | 1992-03-09 | 1999-03-17 | 古河電気工業株式会社 | Manufacturing method of aluminum pipe by rotary wheel extrusion method |
| JPH07284841A (en) * | 1994-04-12 | 1995-10-31 | Yano Eng:Kk | Hollow die for extrusion and conformed extruding device |
| JPH09225523A (en) * | 1996-02-27 | 1997-09-02 | Fujikura Ltd | Production of dispersion strengthened material |
| FI101457B1 (en) | 1996-06-26 | 1998-06-30 | Outokumpu Copper Products Oy | The way to make a bimetallic material |
-
1999
- 1999-10-12 GB GBGB9924160.6A patent/GB9924160D0/en not_active Ceased
-
2000
- 2000-10-12 AU AU79331/00A patent/AU779245B2/en not_active Ceased
- 2000-10-12 AT AT00969673T patent/ATE381395T1/en not_active IP Right Cessation
- 2000-10-12 JP JP2001529884A patent/JP2003511243A/en active Pending
- 2000-10-12 DE DE60037529T patent/DE60037529T2/en not_active Expired - Fee Related
- 2000-10-12 RU RU2002111684/02A patent/RU2247618C2/en not_active IP Right Cessation
- 2000-10-12 EP EP00969673A patent/EP1220723B1/en not_active Expired - Lifetime
- 2000-10-12 CA CA002397807A patent/CA2397807A1/en not_active Abandoned
- 2000-10-12 WO PCT/GB2000/003959 patent/WO2001026834A1/en active IP Right Grant
- 2000-10-12 CN CN00813537A patent/CN1377306A/en active Pending
-
2002
- 2002-02-28 ZA ZA200201684A patent/ZA200201684B/en unknown
- 2002-03-04 US US10/086,634 patent/US6619093B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0398747A1 (en) * | 1989-05-18 | 1990-11-22 | Bwe Limited | Continuous extrusion apparatus |
| US5813270A (en) * | 1995-03-17 | 1998-09-29 | Bwe Limited | Continuous extrusion apparatus |
| GB2326121A (en) * | 1997-06-11 | 1998-12-16 | T & N Technology Ltd | Improved continuous rotary extrusion machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA200201684B (en) | 2003-08-27 |
| CA2397807A1 (en) | 2001-04-19 |
| US20020121121A1 (en) | 2002-09-05 |
| DE60037529T2 (en) | 2008-04-30 |
| US6619093B2 (en) | 2003-09-16 |
| AU7933100A (en) | 2001-04-23 |
| DE60037529D1 (en) | 2008-01-31 |
| EP1220723A1 (en) | 2002-07-10 |
| JP2003511243A (en) | 2003-03-25 |
| ATE381395T1 (en) | 2008-01-15 |
| GB9924160D0 (en) | 1999-12-15 |
| CN1377306A (en) | 2002-10-30 |
| EP1220723B1 (en) | 2007-12-19 |
| RU2247618C2 (en) | 2005-03-10 |
| WO2001026834A1 (en) | 2001-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase | ||
| TH | Corrigenda |
Free format text: IN VOL 15, NO 31, PAGE(S) 6600-6603 UNDER THE HEADING APPLICATIONS LAPSED, REFUSED OR WITHDRAWN PLEASE DELETE ALL REFERENCE TO APPLICATION NO. 79331/00 |